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US Patent: 449,850
Coffee Roaster
Patentee:
Olof Hammarstrom (exact or similar names) - Worcester, Worcester County, MA

USPTO Classifications:
432/239, 432/254.1, 432/261

Tool Categories:
agricultural : coffee roasters

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 22, 1890
Granted: Apr. 07, 1891

Patent Pictures:
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